MCP vs API: what's the difference?
Why the two are not rivals: an API is a service’s own contract, while MCP is a standard layer that sits above APIs and lets a model discover tools at runtime.
MCP vs function calling: what's the difference?
Not a choice: function calling is how a model emits a structured tool request; MCP is the protocol that standardises how those requests reach their destination.
Open-source vs closed-source LLMs: what's the difference?
The distinction starts with who holds the weights and extends to what you can do when a model makes a mistake you need to trace.
RAG vs fine-tuning: which and when?
They are not rival answers to one question. One changes what a model knows, the other changes how it behaves.
Single-agent vs multi-agent systems: what's the difference?
One model handles the full task. The other distributes it across agents with defined roles. Whether that split is worth the coordination cost depends on the task.
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